Safety early warning device of bridge crane

Abstract

The utility model discloses a safety pre-warning device of a bridge crane, which relates to the technical field of cranes, when the bridge crane breaks down, one side of the bridge crane is moved to the edge of one side of a track, the safety pre-warning device is arranged on the other side of the bridge crane, and the safety pre-warning device comprises a laser distance measuring device, a signal processing device and a signal processing device, the laser ranging device is used for detecting an object close to the other side of the track; and the PLC controller is connected with the laser distance measuring device and the three-color audible and visual alarm, and when the PLC controller detects that an object approaches through the laser distance measuring device, the PLC controller controls the three-color audible and visual alarm to give an alarm prompt. The system has a high-precision and portable function, can be used under complex working conditions, effectively reduces the safety risk of maintainers through the detection of the safety early warning device, improves the field safety management and control capability, and improves the safety coefficient of operators.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to a safety warning device for a bridge crane. Background Art

[0002] At present, during the maintenance work in the working area of ​​the bridge crane in the metallurgical industry, the safety warning method for the crane under maintenance and the operating bridge crane with the same span is red flags, and road blocks are used for safety isolation. The original safety warning method, red flags, are easily affected by weather and on-site light, and the marking effect is not good, and the safety warning effect is not good. Once the driver confirms that it is not good, there is a risk of the operating bridge crane colliding with the road block, which will cause the maintenance crane to collide with the operating bridge crane with the same span, bringing greater safety risks to the workers in the construction area. At the same time, the original safety warning method, red flags, only warn the workers and drivers above the bridge crane, and there is no safety warning for the construction area below the overhead crane. There is a greater risk of lifting injuries and mechanical injuries during the operation. Utility Model Content

[0003] The purpose of the utility model is to provide a safety warning device for a bridge crane, which has high precision and portable functions, can meet the use of complex working conditions, and can effectively reduce the safety risks of maintenance personnel through detection by the safety warning device, improve the on-site safety management and control capabilities, and improve the safety factor of operators.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] One aspect of an embodiment of the utility model provides a safety warning device for a bridge crane. When the bridge crane fails, one side of the bridge crane is moved to the edge of one side of a track, and the safety warning device is set on the other side of the bridge crane. The safety warning device includes: a laser distance measuring device, which is used to detect objects approaching from the other side of the track; a PLC controller and a three-color sound and light alarm, which are respectively connected to the laser distance measuring device and the three-color sound and light alarm. When the PLC controller detects that an object is approaching through the laser distance measuring device, the PLC controller controls the three-color sound and light alarm to issue an alarm prompt.

[0006] In some embodiments, the safety warning device also includes a voice module, which is connected to the PLC controller. When the PLC controller detects an object approaching through the laser ranging device, the PLC controller controls the voice module to issue a voice prompt.

[0007] In some embodiments, the safety warning device also includes a control box, which is provided with a touch screen. The touch screen is connected to the PLC controller, and the PLC controller is arranged in the control box. The staff controls the PLC controller through the touch screen, and the voice module is arranged on the outer wall of the control box.

[0008] In some embodiments, the safety warning device also includes a supporting foot and a mounting frame, the bottom of the mounting frame is connected to the top of the supporting foot, and the control box is arranged on the mounting frame.

[0009] In some embodiments, the safety warning device also includes an alarm mounting base and a support rod, the bottom of the alarm mounting base is connected to the top of the support foot, the bottom of the support rod is connected to the top of the alarm mounting base, and the top of the support rod is connected to the three-color sound and light alarm.

[0010] In some embodiments, the safety warning device also includes a ranging device base and a ranging device fixing bracket, the bottom of the ranging device base is connected to the top of the supporting foot, the bottom of the ranging device fixing bracket is connected to the top of the ranging device base, and the laser ranging device is arranged on the ranging device fixing bracket.

[0011] In some embodiments, the safety warning device also includes a movable adjustment bracket, both ends of the movable adjustment bracket are connected to bracket movable feet, the two bracket movable feet are respectively rotatably connected to the two side walls of the ranging device fixed bracket, and the laser ranging device is arranged on the movable adjustment bracket.

[0012] In some embodiments, a rechargeable lithium battery is also provided in the control box.

[0013] In some embodiments, a power module, a power switch, a control relay and a terminal block are also provided in the control box.

[0014] A safety warning device for a bridge crane according to an embodiment of the utility model has at least the following beneficial effects: the application can realize the function of issuing a safety warning reminder to construction personnel and external areas when overhauling a high-liquid crane in a steelmaking workshop. The detection distance accuracy of the application reaches the millimeter level, and it has a high safety accuracy capability. At the same time, it can use AC 220V and DC 24V power supplies, and is equipped with a lithium battery pack. It has a portable function and can meet complex working conditions. Through the detection of the safety warning device, the safety risks of maintenance personnel are effectively reduced, the on-site safety management and control capabilities are improved, and the safety factor of the operating personnel is reported.

[0015] It is to be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 is a principle block diagram of a safety warning device according to an embodiment;

[0018] Figure 2 is a left side view of the safety warning device according to the embodiment;

[0019] Figure 3 is a right side view of the safety warning device according to the embodiment;

[0020] Figure 4 is a schematic structural diagram of a laser distance measuring device according to an embodiment;

[0021] Figure 5 is a schematic diagram of the internal structure of a control box according to an embodiment;

[0022] Figure 6 The figure is a simplified diagram of on-site use of the safety warning device according to the embodiment.

[0023] The accompanying drawings are marked as follows: 1. Support foot; 2. Mounting frame; 3. Control box; 4. Touch screen; 5. Voice module; 6. Alarm mounting base; 7. Support rod; 8. Three-color sound and light alarm; 9. Distance measuring device base; 10. Distance measuring device fixing bracket; 11. Bracket movable foot; 12. Movable adjustment bracket; 13. Laser distance measuring device; 14. PLC controller; 15. Power module; 16. Rechargeable lithium battery; 17. Control relay; 18. Terminal block; 19. Power switch; 20. Track; 21. Crane. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected", "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these example embodiments are provided so that the description of the present disclosure will be more comprehensive and complete and the concepts of the example embodiments will be fully conveyed to those skilled in the art. The accompanying drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, and thus their repeated description will be omitted.

[0028] The technical solution of the embodiment of the present application is briefly described below:

[0029] According to some embodiments, Figure 1 , Figure 6 As shown, the present application provides a safety warning device for a bridge crane 21. When the bridge crane 21 fails, one side of the bridge crane 21 is moved to the edge of one side of the track 20, and a safety warning device is set on the other side of the bridge crane 21. The safety warning device includes:

[0030] A laser distance measuring device 13, which is used to detect an object approaching from the other side of the track 20;

[0031] The PLC controller 14 and the three-color sound and light alarm 8 are respectively connected to the laser distance measuring device 13 and the three-color sound and light alarm 8. When the PLC controller 14 detects that an object is approaching through the laser distance measuring device 13, the PLC controller 14 controls the three-color sound and light alarm 8 to issue an alarm prompt.

[0032] Furthermore, the safety warning device also includes a voice module 5, which is connected to the PLC controller 14. When the PLC controller 14 detects that an object is approaching through the laser ranging device 13, the PLC controller 14 controls the voice module 5 to issue a voice prompt.

[0033] Based on the above embodiments, Figure 6 As shown, before the maintenance of the high-pressure hydraulic bridge crane 21, the operator first places the safety warning device on the edge of the vertical surface of the body of the faulty bridge crane 21, facing the bridge crane 21 running with the same span. Figure 6 As shown, it can be placed on the rail 20 beam of the crane 21 or on the maintenance ground platform of the crane 21. At the same time, the elevation angle can be adjusted by 90° and the rotation angle can be adjusted by 360° to realize the switching of the safety warning for the operator above the crane 21 and the safety warning below the crane 21. After the safety warning device is placed, connect the power supply of the safety warning device to power the device. If the site does not have the conditions for power connection, install the lithium battery in advance to power the device.

[0034] After the safety warning device is powered on, the safety warning distance of the operating crane 21 in the same span is set according to the position of the maintenance crane 21, and the warning value 15 meters and the alarm value 6 meters are set respectively through the PLC controller 14, and the distance is detected by the laser distance measuring device 13.

[0035] When the distance between the crane 21 with the same span is greater than 15 meters, the three-color sound and light alarm 8 shows that the green light is always flashing, and there is no voice broadcast.

[0036] When the distance between the detection and the crane 21 running in the same span is less than or equal to 15 meters and greater than 6 meters, the warning value is reached. At this time, the PLC controller 14 issues a command to control the yellow light of the three-color sound and light alarm 8 to flash constantly, and controls the voice module 5 to broadcast the first-level danger alarm: "Please pay attention to danger."

[0037] When the distance between the detection and the crane 21 running in the same span is less than or equal to 6 meters, the alarm value is reached. At this time, the PLC controller 14 issues a command to control the red light of the three-color sound and light alarm 8 to flash constantly, the buzzer responds, and controls the voice module 5 to broadcast the dangerous secondary alarm, broadcasting "Danger, evacuate immediately".

[0038] The following is combined with the appendix of this manual Figures 1 to 5 , the preferred implementation modes of the present disclosure are further elaborated in detail.

[0039] According to some embodiments, Figure 2 , Figure 3 and Figure 5As shown, the safety warning device also includes a control box 3, on which a touch screen 4 is provided. The touch screen 4 is connected to a PLC controller 14, which is provided in the control box 3. The staff controls the PLC controller 14 through the touch screen 4, and the voice module 5 is provided on the outer wall of the control box 3.

[0040] According to some embodiments, Figure 2 , Figure 3 As shown, the safety warning device also includes a supporting foot 1 and a mounting frame 2 , the bottom of the mounting frame 2 is connected to the top of the supporting foot 1 , and the control box 3 is arranged on the mounting frame 2 .

[0041] According to some embodiments, Figure 2 , Figure 3 As shown, the safety warning device also includes an alarm mounting base 6 and a support rod 7. The bottom of the alarm mounting base 6 is connected to the top of the support foot 1, the bottom of the support rod 7 is connected to the top of the alarm mounting base 6, and the top of the support rod 7 is connected to the three-color sound and light alarm 8.

[0042] According to some embodiments, Figure 2 , Figure 3 and Figure 4 As shown, the safety warning device also includes a distance measuring device base 9 and a distance measuring device fixing bracket 10, the bottom of the distance measuring device base 9 is connected to the top of the supporting foot 1, the bottom of the distance measuring device fixing bracket 10 is connected to the top of the distance measuring device base 9, and the laser distance measuring device 13 is arranged on the distance measuring device fixing bracket 10.

[0043] According to some embodiments, Figure 4 As shown, the safety warning device also includes a movable adjustment bracket 12, both ends of which are connected to bracket movable feet 11, the two bracket movable feet 11 are rotatably connected to the two side walls of the ranging device fixed bracket 10, and the laser ranging device 13 is arranged on the movable adjustment bracket 12.

[0044] Based on the above embodiment, the laser distance measuring device 13 can adjust the detection direction through the movable foot 11 of the bracket.

[0045] According to some embodiments, Figure 5 As shown, a rechargeable lithium battery 16 is also arranged in the control box 3.

[0046] Based on the above embodiment, the rechargeable lithium battery 16 is used to supply power to various electrical appliances on the safety warning device.

[0047] According to some embodiments, Figure 5 As shown, the control box 3 is also provided with a power module 15 , a power switch 19 , a control relay 17 and a terminal block 18 .

[0048] Based on the above embodiment, the PLC controller 14 is a Siemens S7-1500 controller. By programming the PLC controller 14, writing the normal value, warning value, and alarm value running program, the position value information input by the laser rangefinder is processed by the control unit PLC, and the action signal is quickly output according to the set response condition satisfied by the real-time detection distance value, and the three-color sound and light alarm 8 and the voice module 5 are controlled to make normal, warning, and alarm warning responses respectively through the control relay 17.

[0049] Furthermore, the three-color sound and light alarm 8 is a LTA505 red, yellow, green three-color + light + buzzer combined alarm. According to the design characteristics of the safety warning device: the green light is always flashing in the safe working state; the yellow light is always flashing in the warning working state; the red light is always flashing in the alarm working state, and the buzzer responds. The control line of the three-color sound and light alarm 8 is connected to the control relay 17, and the control unit PLC outputs a response signal, which triggers the three-color sound and light alarm 8 to operate through the control relay 17.

[0050] Furthermore, the touch screen 4 is a Kunlun Tongtai TPC7062TI integrated touch screen 4. The operation interface touch screen 4 is connected to the control unit PLC by an Ethernet cable, which is an interface for displaying the real-time value of the distance measurement and inputting the warning value and the alarm value. When using the safety warning device, the setting input of the warning and alarm distance values ​​can be completed through the touch screen 4 according to the actual working conditions and requirements.

[0051] Furthermore, the voice module 5 is a HY8900 multi-channel trigger voice player module. The voice software is implanted to set the warning voice "Please pay attention to danger" and the alarm voice "Danger, evacuate immediately". The warning voice and alarm voice trigger signal lines of the voice module 5 are connected to the control relay 17, and the control unit PLC outputs the warning and alarm signals, which are controlled by the control relay 17 to control the warning voice and alarm voice response.

[0052] Furthermore, the rechargeable lithium battery 16 is a 18650 24V 5000mAh lithium battery pack. When designing the device, the working power supply of each component is selected to be DC 24V. By installing the power module 15, when the external AC 220V power supply is connected, it is converted into a DC 24V working power supply through the power module 15. When the safety warning device is in use, if the site does not have the conditions for connecting to the power supply, the internal backup DC 24V lithium battery pack can be used to power the safety warning device, realizing dual power supply.

[0053] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0054] Although the present disclosure has been described with reference to several typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present disclosure can be implemented in a variety of forms without departing from the spirit or essence of the present application, it should be understood that the above-mentioned embodiments are not limited to any of the foregoing details, but should be widely interpreted within the spirit and scope defined by the appended claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A safety warning device for a bridge crane, characterized in that: When the bridge crane fails, one side of the bridge crane is moved toward the edge of one side of the track, and the safety warning device is arranged on the other side of the bridge crane, and the safety warning device includes: A laser distance measuring device, which is used to detect an object approaching on the other side of the track; A PLC controller and a three-color sound and light alarm, wherein the PLC controller is connected to the laser distance measuring device and the three-color sound and light alarm respectively, and when the PLC controller detects that an object is approaching through the laser distance measuring device, the PLC controller controls the three-color sound and light alarm to issue an alarm prompt; The safety warning device also includes supporting feet, a mounting frame, a distance measuring device base, a distance measuring device fixed bracket and a movable adjustment bracket, the bottom of the mounting frame is connected to the top of the supporting feet, the bottom of the distance measuring device base is connected to the top of the supporting feet, the bottom of the distance measuring device fixed bracket is connected to the top of the distance measuring device base, the laser distance measuring device is arranged on the distance measuring device fixed bracket, both ends of the movable adjustment bracket are connected with bracket movable feet, the two bracket movable feet are rotatably connected to the two side walls of the distance measuring device fixed bracket respectively, and the laser distance measuring device is arranged on the movable adjustment bracket.

2. The safety warning device according to claim 1, characterized in that: The safety warning device also includes a voice module, which is connected to the PLC controller. When the PLC controller detects that an object is approaching through the laser ranging device, the PLC controller controls the voice module to issue a voice prompt.

3. The safety warning device according to claim 2, characterized in that: The safety warning device also includes a control box, which is provided with a touch screen. The touch screen is connected to the PLC controller, and the PLC controller is arranged in the control box. The staff controls the PLC controller through the touch screen, and the voice module is arranged on the outer wall of the control box.

4. The safety warning device according to claim 3, characterized in that: The control box is arranged on the mounting frame.

5. The safety warning device according to claim 4, characterized in that: The safety warning device also includes an alarm mounting base and a support rod, the bottom of the alarm mounting base is connected to the top of the support foot, the bottom of the support rod is connected to the top of the alarm mounting base, and the top of the support rod is connected to the three-color sound and light alarm.

6. The safety warning device according to claim 3, characterized in that: A rechargeable lithium battery is also arranged in the control box.

7. According to the safety warning device of claim 3, a power module, a power switch, a control relay and a terminal block are also provided in the control box.

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